Multi-ship following operation in ice-covered waters with consideration of inter-ship communication

Abstract

The version presented here may differ from the published version or from the version of the record. Please see the repository URL above for details on accessing the published version and note that access may require a subscription.

Collision prevention of ship towing operation under environmental disturbance

“…A variety of reasons can lead to the occurrence of such close encounters, such as limited channel width or a controlled operation under crew communication. The communication between ships helps to keep these close-range encounters safe (Lee and Park, 2020;Zhang et al, 2020). Nevertheless, the alert method presented in this article can still be useful.…”

“…where ρ a denotes the air density; V rw is relative wind speed; c x , c y and c n are wind coefficients for horizontal plane motions; γ rw (t) is the wind angle of attack relative to ship bow; A Fw and A Lw denote the orthographic area and side projection area of the ship structure above the ship's waterline, respectively; L oa is the ship overall length. The other effects (waves and currents) generated by winds (Cavaleri et al, 2012) are represented by using trigonometric functions and related to the wind speed V w (t) and direction β w (t) (Du et al, 2020):…”

“…It is noticed that the position and heading of the ship can be determined by the trajectory control according to Section 4.2. Based on the ship position, heading and towing angles, the desired position and heading of the two tugs can also be determined by the following formulations (Du et al, 2020):…”

“…Ship towing operation is an important component of maritime transportation and has been increasingly applied for a variety of purposes, including towing drilling platforms (Zhao et al, 2016), rescuing disabled vessels (Shigunov and Schellin, 2015;Ismail et al, 2021), supporting ship escort and convoy operations in ice conditions (Valdez Banda et al, 2016;Goerlandt et al, 2017;Zhang et al, 2020), and assisting ships to berth automatically (Du et al, 2021).…”

Improving Near Miss Detection in Maritime Traffic in the Northern Baltic Sea from AIS Data

“…Ship collision is the most common type of accident in the Northern Baltic Sea, a busy and ecologically vulnerable sea area [1][2][3][4][5][6]. Preventing ship collision helps reduce environmental pollution, casualties, and economic losses.…”